Solid-phase synthesis of coralmycin A/<i>epi</i>-coralmycin A and desmethoxycoralmycin A
作者:Paige M. E. Hawkins、Dennis Y. Liu、Roger G. Linington、Richard J. Payne
DOI:10.1039/d1ob01062j
日期:——
The total synthesis of the natural product coralmycin A/epi-coralmycin A, as well as a desmethoxy analogue is described. Synthesis was achieved via a divergent, bidirectional solid-phase strategy, including a key on-resin O-acylation, O to N acyl shift, and O-alkylation protocol to incorporate the unusual 4-amino-2-hydroxy-3-isopropoxybenzoic acid motifs. The synthetic natural product was generated
描述了天然产物珊瑚霉素A/表珊瑚霉素A以及去甲氧基类似物的全合成。通过不同的双向固相策略实现合成,包括关键的树脂上O -酰化、 O至N酰基转移和O - 烷基化方案以掺入不常见的 4-氨基-2-羟基-3-异丙氧基苯甲酸主题。合成的天然产物是在中心β-甲氧基天冬酰胺残基处以差向异构体的1:1混合物形式生成的,并且对一组10种革兰氏阴性和7种革兰氏阳性生物表现出有效的抗菌活性。去甲氧基类似物对这组药物具有明显更强的抗菌活性,最低抑制浓度 (MIC) 低至 50 nM。